75426561331 has 6 divisors (see below), whose sum is σ = 82906881596. Its totient is φ = 68569601100.

The previous prime is 75426561313. The next prime is 75426561359. The reversal of 75426561331 is 13316562457.

It is not a de Polignac number, because 75426561331 - 2⁹ = 75426560819 is a prime.

It is a super-2 number, since 2×75426561331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75426561131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 311679885 + ... + 311680126.

Almost surely, 2^75426561331 is an apocalyptic number.

75426561331 is a deficient number, since it is larger than the sum of its proper divisors (7480320265).

75426561331 is a wasteful number, since it uses less digits than its factorization.

75426561331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623360033 (or 623360022 counting only the distinct ones).

The product of its digits is 453600, while the sum is 43.

The spelling of 75426561331 in words is "seventy-five billion, four hundred twenty-six million, five hundred sixty-one thousand, three hundred thirty-one".